Don't let the parenthesis fool you. Since there is a plus in the middle, you can just combine like terms. Let's do number 1:

Combine like terms.

This is as simple as you can get it. Now, let's do number 2:

Combine like terms.

This is as simple as you can get it.
Final Answers:
1.) 
2.) 
a=4 and b=6.
so you will plug the 4 for a and plug 6 in for b
the new equation is going to be:
3(4)-(6)
3*4-6
12-6
THE ANSWER IS 6
The correct answer is the third one.
Each x value (or domain) can only have one unique output. For example, if I had (2,7), then I could not have (2,14). If I had (3,15), then I could have (3,15) again, because they are the same point. If you need further explanation, just let me know. : )
Answer:
1.8 speed
Step-by-step explanation:
Answer:
x = 65
Step-by-step explanation:
65 degress + 65 degrees + 50 degrees = 180 degrees
The triangle is supplementary. Hope this helps! :)